White van.
Though he wanted to have control over everything, Sam had no choice but to delegate most of the work that went into the award ceremony and press conference to other people. The Valkyries were fast learners and were able to take on most of the vacant roles in the forty sixth base, but one thing they couldn't do was manage events that involved humans.
Since said events were taking place around the First Settlement, It was General Rosita Walsh who took care of everything. The five-star hotel they used was one of her properties and thus she handled everything from the security to the food served in the restaurants and other services.